Patients who have undergone an autologous stem cell transplant for primary amyloidosis have a high risk of gastrointestinal bleeding. This case highlights the novel endoscopic finding of a “moon surface mucosa” in the small bowel, which was a likely contributor in this case of gastrointestinal hemorrhage.

Capsule endoscopy in a 57-year-old man presenting with fatigue and melena showed a mass in the small bowel, which biopsies confirmed as focal high-grade carcinoma with choriocarcinoma features, with clear margins without lymph node involvement.

A 26-year-old Haitian-American man with a desmoid tumor of the right foot was diagnosed with Gardner’s syndrome after colonoscopy demonstrated more than 50 polyps throughout the colon more than 25 polyps in the duodenum (Figure 3).

Lipomas of the colon are the second most common benign tumor of the colon and the most common nonepithelial tumor of the colon, with an incidence of up to 4% in autopsy series. We report a woman with a colonic lipoma mass with associated intussusception of the mesentery at the level of the mid-sigmoid colon.

A 62-year-old woman with no prior medical care was discovered to have a completely obstructing, ulcerated mass and coloduodenal fistula in the hepatic flexure on colonoscopy; biopsy confirmed poorly differentiated adenocarcinoma of the colon.